I prefer running regulated UTH, CHEs and black bulbs all the time to keep the right temps in the right places, then simple fluorescent or LED daylights on a timer to remind the snake it's daytime, and show off all the decorations while the snake hides. Saves a ton on bulbs, and the temps are consistently ideal without unnecessary night drops. The CHE's are plenty to keep temp without the black lights, but a little light helps me watch and feed her when she's active at night.